Valve for inflated articles



May 5, 1925. 1,536,870

A. KLOTZ YALYE FOR INFLATED ARTICLES rizinal iled June 1922 a b iln I I l I Patented May 5,

on em 9mm.

rc m ma RED Kiio'rz, ya cit- 'newand useful flmprovemen'tsfi n Valves for Inflated anal-s er which "the Ytollowing iii-s ifi t onn r ap lication; and, 'lnne 5.119 2, of

which this application is a ,division.

Thislinvention relates toan inlet valve for bodies to be inflated, :fgr instan e pneumat c insertions..forj. -s oes; .i'foothal'ls" or' the like.

'fhe'invention' hasfor its object to create an absolutely flat valvewhich isrequired for instance for theiinflating: offpneumatic insertions for shoes forfla t footed people, hernial trusses or bandages, football bladders or the like. With valves designed for these purposes every element which increases the thickness of the valve is very inconvenient owing to the lack of space; so that resiliency of the non-return valve is abandoned, this valve be ng located in the air pumps. In'the arrangements of known type the nut which serves for closing the-valve projects from the same and has to be tightened by hand before the pump is removed. According to this invention this nut projecting from the valve is no longer required;

The invention cons-sts in using a closing nut for the orifice of the valve having in its outer surface a conical smooth walled cavity into which the conical mouth piece of the air pump fits air-tightly. The conical tubular mouth piece is adapted to serve at the same timeas driver for the screwing-on and ofi of the nut. The outer edge of the conical cavity inthe locking-nut has either a circular groove or rib of polygonal shape or it has two diametrically opposed radially directed indentations or projections so that the conical mouth piece of the air pump which has on its base projections or indentations corresponding with the indentations or. projec- ,tions of the locking nut can draw the same along much more securely if it is inserted into the locking nutp A On the accompanying drawing a form of construction of the improved air valve and several forms of construction of the mouth piece of the air pump are shownby way of example.

s te @119 imi-Qth convenient ineans K.

Y d t' d is A. ar a an 'eflii th conical mouth piece extending; 4

one ring A on th conica .im ith pie e In Old61f to presence the good ,fit the projections A "do not reach down completely to the bottom of the indentation A. I

"The valve shown in Fig. 1 consists of a body]: which is pressed by means of a nut 'H against the wall-B of the bladder and against the metal support M and on a washer B. This metal support M is required if the valve is to be used for pneumaticinsertions for shoes or for hernial bandages. In the upper end of the val've'body I a pack- .flriginal anglioatlpn air-An ie l5, 19 22,.Seria1.-No. 566,027. {Ilivi dediandthis application filed @1111;

' a -19 3. ,isenaigno. 62.1. 303.

s hows nogging disk G is inserted. The nut S has indentations A? (as shown in Fig. 1)xinto which fit the twonoses or projections A of the-pump (Fig. 2). In order to inflate the bladder the conical mouth piece of the pump is pressed into the corresponding conical bore of the nut whereby the noses A engage With the cavities A, so that a practically air tight closure is produced. The air passa e D is then uncovered (at right hand thread) flbya slight rotation of the pump- P to the left and the air is pumped into the bladder. The outflow ofthe air from thebladder, if the mouth piece of the pump is removed, is prevente'dbya ball (Fig. 4) or other After the bladder has been sulficiently inflatedi the locking nut is screwed home by a slight rotation of the pump in right hand side direction. 7 Experience has shown that in many cases the mere friction of the conical mouth piece A in the conical, bore of the nut Sis suiticient to unscrew'the nuts or to tighten the same. By omitting the noses A and the corresponding indentations A or by omitting likewise the polygonal ring A at the mouth piece ofthe air pump, a special advantage is obtained in so far as the threads of the valve plug A can never be stripped, evenif the device is carelessly or roughly manipulated by inexperienced people. After the valve A plug has become properly seated, the frictional contact is automatically broken and continued rotary thrust however violent can do no damage to the flat threaded valve which by reason of its very flatness would otherwise be liable to thread stripping.

This' improved arrangement permits not only that the valve is made quite flat but also to facilitate the manipulation at the inflating. WVith valves of the commonly used construction this manipulation is complicated as the pump has to be held with one hand, the other hand being used for tightening the locking screw and for holding the cushion to be inflated.

' A further important advantage of the improved construction is that the air filling of the cushion can be accurately regulated which is specially necessary if the air volume of the cushion is only small as is the case wlth the insertions 1n shoes for flat footed people and with hernic bandages.

tightening of the locking screw by hand so that air must escape through the threads. With this improved air valve according to the invention this inconvenience is avoided as after the pumping or during the same the valvecan be instantaneously closed by a slight rotation of the pump.

1 claim In a valve of the type set forth, in combination with a rotatable tool presenting a conically tapered end, a valve case, a valve plug rotatable therein and presenting a concentric tapering depression of a taper complemental to that of said tool end for frictional cooperation therewith, the friction angle between said complemental taper surfaces'being such that uponthe plug becoin- 

